Electrically-controlled valve.



PATENTED DEC. 8, 1903.

0. JUNGGRBN. I ELECTRIGALLY CONTROLLED VALVE.

APPLICATION FILED NOV. 15, 1902.

H0 MODEL \/E]\ITOR. UscahJunqqPem' 5 NULL UNITED STATES Patented December 8 1903.

' PATENT; OFFIC ELECTRIC COMPANY, A CORPORATION 'OF NEW YORK.

ELECTRlCALLY-CONTROLLED VALVE.

srn'crrxcacr xonromm part'of Letters Patent No. 746,337, datedDec'ember s, 1903.

Application filed November 15,1902. Elcrial No. 181,478. (No model.)

To all whom it may concern.-

Be it known thatI, OSCAR J UNGGREN, a citi? zen of the United States, residing atiSohenectady, county of Schenectady, State of New York, have invented certain new'and useful Improvements in Electrically-Controlled Valves, of whichlhefollowid'g is a specification. r

At times it becomes necessary'to interrupt the flow of steam or other moti've fluid from the boiler to the energy-consuming devices. This interruption may be necessary "on account of changes in load conditions or von account of accident either to the energy-consnming devices or to the fluid-carrying conduit.

Accidents sometimes happen to engines-.

such, for example, as the breaking of a governor or cylinder-head that render it'exceedingly dangerous for persons t'oent'er the engine-room. In cases of this kind there is usually a considerable loss of time in shu 'tting off the steam. -II: the accident involves the steamrcarrying connections or in any way opens communication between the source of steam-supply and the engine-room, the latter 'will be immediately filled with steam, rendering it practically impossible for a man to enter the room and manually operate the main throttle-valve. In-one accident thathasbeen called to my'attention fifteen minutes elapsed, before the throttle-valve could be closed,

'- .owing to the steam 'in the engine-room, and

tle-valve is sometimes placed" in the boilerroom; but-owing to the factth'atit has to be located at a relatively inaccessible place it frequently happens that before the valve can be shut the engine or other energy-consuming device is wrecked If the accident happens to the steam-pipe in the boiler-room, this valve is of course inaccessible, and owing tothe steam in the room the fires cannot be drawn.

Throttle valves for thesystems of large ca-- pacity are so constructed that to completely close them requiresconsiderable time-for 'tion.

thereof are cylinders Sand 9,

example, a couple of minutes. In som'e cases the valve can'be' closed by one man and in other cases two or'.' more aige required. The

quiredto handle alarge amount of steam under considerable pressure, and in order to reduce the labor of operating the valve to a minimum gearing of one sort or another is introduced into the actuating mechanism, hence the comparatively long period of time required in closing them.

My invention has for its object to provide mainth rottle valvesj-in large stations are re-' a valve which is capable of quickly and positi vely opening or closing a passage, and thereby controlling the fiow of fluid from one point,

to another, and one which is capable of being controlled from. a nearby point or from a distance.

For a consideration of what I consider to be novel and my invention attention is, called to the accompanying description and claims appended" thereto.

In the'drawing, whi ch illustrates an em-.

bodiment of my invention, is shown an elec trically-ontrolled valve in longitudinal sec- 1 representsthe main body of the valve,

.and flanges 2 are.provided at the ends for connecting it with steam' or other fluid-carrying conduits 3 and 4. In the present illustr'ation the motive fluid passes from the concated in the boiler or engine room, as desired. Bolts 5 are employed to unite the valve with the cond uits. The casing is divided cen trally by a partition 6, that contains ascrew-thread-w d uit 3 to 4, and the valve itself may be loed opening in which is moiinted the detachable seat 7 of the main throttleor cut-01f or cut-0E valve 12. The valve engages with a shoulder on the rod' hnd is provided with seat 1'7, which cuts off the supply of steam through the port or passage 15. At the same time the valve moves away from theseat 21 the steam that is back of the piston is permitted to escape to the exhaust-pipe 24, as is indicated by the arrow; thus creating an unbalanced condition as to pressures on the piston. As soon as the pressure on the back of the piston relieved it begins to move toward the righ under the action of the steam on the inlet side of the valve. In this connection it is to be noted that the area of the piston is greater than that of the main valve seat- 7 it will enter the port 37 and pass through the valve-opening 38 into the port or passage 39 back of the left-hand piston. This means that the pressures on opposite sides of the left-hand piston are balanced, and hence 'no opposition is oifered thereby to the opening of the valve. The opening of' the valve requires only a very brief interval oftime, and as soon as the operator is certain that the valve. is open the circuit of the magnet is broken by the switch 36.

Assuming that the main throttle-valve is open and that for some reason it-becomes. necessary to close it, the switch 36-is moved to close the circuit of the left-hand magnet. This causes the valve 40 to close thespace' back of the piston to the steam-supplyfand\ open it to the exhaust-pipe 41. -As.soon as the pressure on the-back of the left-hand piston is relieved the main valve starts to close,

because the pressures on the left-hand piston are nnbalanctad-thatisto say, the left-hand side of the piston is open to the exhan'st, while the right-hand piston is subjected to the full pressure of the fluid passing through the valve. The right-hand piston is in a balanced condition, because both sides of it are subjected to the inlet-pressure.

From the foregoing it will be seen that inorder to operate the valve-two magnets are necessary, each magnet controllinga small valve, which inturn admits motive fluid to a piston or cuts off the supply, as the; case maybe. The pistons and their cylinders are, in

fact, motors, one of which controls the open-' ing of the valve and the other; its closing. The motors are made large enough so that the supply of fluid passing through the valve can bequickly interrupted, and the s pply of energy for these motors is obtain'e from the inletside of the valve, and only a. very small amount of energy is required to operate-the magnets which regulate the operation of themotor-controlling valves,-the said magnets only requiring current when the main valve is actually moving.

I The two motors cooperate in a manner to actuate the main valve. one being employed As soon as the steam passes the valveto close it, the other to open it. If only one motor was employed or one was rendered inoperative,the valve could be opened or closed, depending on which mot-or was dispensed the valve toits opposite position. The valve mechanism and motors are entirely inclosed by the casing, which dispenses with all packings and maintains them in condition for instant operation. The auxiliary-valve-controlling mechanism is also inclosed in a manner to completely protect it and dispense'with packings. 1

In accordance with the provisions of the patent statutes I have described the principle of operation of my invention, t-ogether with the apparatus which I now consider'to represent the best embodimentahereof; but I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means.

What I claim as new, and desire to secure 1. In combination, a main throttle-valve, a

a second motor for moving the valve in the opposite direction, a separately-actllated means alternately acting on each motor for creating an unbalanced condition when it is desired to operate the valve, and a passage for each motor that is controlled by said means which maintains it in a balanced condition while the other niotor isin an unbalancedcondi'tion.

2. In combination, a main throttle-valve, a piston and cylinder for moving the valve in one direction, a piston and cylinder for moving the-valve inthe opposite direction, independent electrically-actuated valves for alternately creating an unbalanced condition as to pressures on the pistons for. the purpose of moving the main valve, and passages for maintaining a balanced condition as to pressure on one piston while the other piston is in its unbalanced condition.

3. In combination, a main valve,pistons situated on opposite sides of the valve, one piston being employed to move the valve in one direction, the other in the opposite direction, a pair of independent and separately-actuated controlling-valves operatively related to the pistons, a magnet for operating one of. the controlling-valves, a spring arranged .to hold the valve open and create a balance as to pressure on one of' the pistons, and a second magnet for operating the other control ling-valve in a manner to create an unbalanced condition as to pressure on the other piston, the two magnets being capable of in-. dependent operation.

.4. In combination, a main valve having an open and aclosed position but nointermediate, a pair of pistons for moving the valve, one piston being arranged to move the yalve in one direction, the other in the opposite direction, independently -acting magnets for regulating the action of the pistons, the said with, but it would then be impossible to move by Letters Patent of the United States, is-

motor for moving the valve in one direction,

controlled by the electrically-actuated valves magnets being denergized, whenever the main valve is in either of its said positions, and valved passages for balancing the pressures gig the pistons when the magnets are deenergi d.-

5. In combination, a main valve having an open and a closed position but nointermediate, pistons andcylinders for moving the valve in opposite directions, separately-actuated valves controlling the action ofthe pisand is provided with ports or passages, ampport carried by the bracket, afmagnet mounted in the support, an exhaust-port, a controlling-valve carried by the support and arranged to control the ports, and a valve-stem which extends into the support for actuating the controlling-valve.

7.- In combination, a main valve, for actuating the valve, a cylinder for the piston, a head for the cylinder, a bracket carried by the head, a support that is mounted.

on the bracket and is provided with a valveseat, ports conveying .motive fluid. to and.

from the cylinder, a controlling-valve, an exhaustport, a spring normally holding} the valve in a position to close the exhaust-port,an electromagnet, and an armature which moves a piston main-valve casing, an electromagnet, a support for the magnetthat is mounted on the bracket, a projection on the support, a-valveactuating stem that passes through the projection, an armature which is provided with a rod or actuator that is separated from the valve-stem by a space, and a spring which normally holds the rod and stem apart;

9. In combination, a main valve, 9. pair of oppositely-disposed pistons for actuating the valve, separately-actuated valves for controlling the pistons, electromagnets for actua ting the valves, and a lost-motion connection between each magnet and-itsvalve, whereby a hammer-blow is imparted to the valve when it-is desired to operate it. 10. In combination, a main valve, a piston and cylinder for moving it,'an inlet and an exhaust port, a valve for controlling both .ports, a spring normally holding the valve 

